Running and Swimming

Ok, this is what I've been up to these couple of days:

On Saturday, I ran 6km in 41min.
On Sunday, I ran 7.2km in 51min.
On Monday, I swam 1.5km in 36.06min.

Running

Sigh...Work has bogged me down, to the extent that I could not even go jogging or swimming. This sorry state of affairs has wasted my stamina, and even more so, my joints. I went for a run this afternoon, and my feet, hips, and shoulder felt strained. I managed to push on for 4.8km, but had to stop, in case I suffer more severe injuries. My maiden biathlon is coming up in less than 2 weeks' time, and here I am simmering. Guess I'll have to continue the punishment, such as running every day for at least 45 min., climb stairs (14 flights x at least 5 times), and swim twice weekly (30 laps in under 37min.)